81833364068 has 12 divisors (see below), whose sum is σ = 143668866432. Its totient is φ = 40785116520.

The previous prime is 81833364001. The next prime is 81833364071. The reversal of 81833364068 is 86046333818.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32889980 + ... + 32892467.

It is an arithmetic number, because the mean of its divisors is an integer number (11972405536).

Almost surely, 2^81833364068 is an apocalyptic number.

It is an amenable number.

81833364068 is a deficient number, since it is larger than the sum of its proper divisors (61835502364).

81833364068 is a wasteful number, since it uses less digits than its factorization.

81833364068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65782762 (or 65782760 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 81833364068 in words is "eighty-one billion, eight hundred thirty-three million, three hundred sixty-four thousand, sixty-eight".